Fluorescent lighting fixture



Nov. 21, 1950 s. R. NAYSMITH FLUORESCENT LIGHTING FIXTURE Filed Jan. 14,1947 jllfa f 2 Sheets-Sheet 1.

ATTORNEY Nov. 21, 1950 s. R. NAYSMITH FLUORESCENT LIGHTING FIXTURE 2Sheets-Sheet 2 Filed Jan. 14, 1947 INVENTOR SHIRLEY A. 4 4 YSM/THATTORNEY Patented Nov. 21, 1950 UNETEE.

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rriooassosnr srcnrnrc. FIXTURE Shirley R. Naysniith, Mei-idem, Corn-1.,assignor to The Miller Companmll/ieriden, Conn, a corporation ofConnecticut Application January 14, 1947, Serial No. 721,970

2 Claims. on.

The present inventi .1: relates "to fluorescent lighting fixtures and ismore particularly direct ed toward single 9 flu rescent ligh ingfixturcsThe, wiring channel is shaped to facilifluorescent fixture hangers andcarries the sockets, reflector, and end plates.

The present invention also contemplates the employment of bafflesarranged between. the ends of adjacent lamps so as to screen the lampsand hold the reflectors in alignment.

Other and further objects will hereinafter appear as the descriptionproceeds.

The accompanying drawings shown, for purposes of illustrating thepresent invention, an embodiment in which the invention may take form,it being understood that the drawings are illustrative of the inventionrather than limiting the same.

In these drawings:

Figure 1 is an inverted plan view of a single lamp unit;

Figure 2 is a side elevational view of th same;

Figure 3 is a perspective view of a lighting uni of double lamp length;

Figure 4 is a longitudinal sectional View taken on the line of Figure l;

Figi 'e 5 is a vertical cro.'-:s-sectional view taken on the ines 5--5of Figures 2 and 4;

Figure is a pers otiye view of an end plate;

Figure 2 is is ective view of a con baiiie pl te reflector alignmentdevice;

Figure ective View illustrating the coupling to ther of two wiringchannels and the employer tne plate; Figure 9 is a ngitu a1 sectionalvi. ing the secure or two lamp units together.

The lighting equipment employs n extruded, preferably aluminum, wiringcl annel Z, of lamp length as illustrated in Figures 1 2, or a doublelamp 183 h as Figure 3, wiring Chan.. has an upper flat wall 5 ternalheads i2--iil, depending walls and reinforcing l --55 at the bottom.preferably has internal g beads iii-i2. lamp ballast lamp to be canstraps ll, carrying r welded in place,

e ged over the The wire way also carries efiector supportin, studsstraps is at the ends of the fill-51.11)

2 to support fluorescent lamp sockets -One of the pair of straps Itrequired for the sockets for each carries a bracket 2i adapted to carrythe starter 22.

Reflectors usually of single lamp length and channel adapted contour ofthe reflector will depend upon the light d stribution Where alightingunit'is of gle lamp length as shown in Figures land 2, of the fixturecarries an end plate 25 in detail in Figure 6. This end plate has erinwardly extending iange El adapted fit under the top wall ll of thewiring channel and enter into the grooves l5, side flanges adapted tofit inside the side walls I3l3 of the wiring channel and outerdownwardly and outwardly extending flanges 2929 of a contour to fitabout the reflector and the lower edge of'the wiring channel as is moreclearly shown in Figure 5. end plate also has small alignment lugs sowhich fit inside the reflector to keep it from being bent inwardly. Theend plates are held in place by screws indicated at 5. At least one ofthese screws is loosened when the reflector is to be placed in thefixture or removed so that the reflector can pass by the lugs Where thewiring channel is a double lamp length or where wiring channels are tobe secured together end to end, the present invention contemplates theemployment of a bafile 32 between adjacent lamp soclrets. This bafile ismade of this sheet metal and has a portion 33 adapted to extend acrossinside the reflector and enter between the lamp sockets and side flanges34-34 which fit the inner surfaces of the ends of the reflectors andbridge the space between them holding them in alignment from the inside.The baffle carries spring clips 3535 which engage around the lowerbeaded portions of the reflectors and hold them in alignment from theoutside.

Two wiring channels may be held together end to end by an H-shapedconnecting strap M. This strap is secured inside the channels by screwsM. It fits inside the beads l2, l2 and is notched to accommodate thesocket supporting straps l9.

Since it: is obvious that the invention may be embodied in other formsand constructions within the scope of the claims, I wish it to beunderstood that the particular form shown is but one of these forms, andvarious modifications and changes being possible, I do not otherwiselimit myself in any way with respect thereto.

What is claimed is:

1. A fluorescent lighting fixture of the single lamp type, comprising anextruded-metal inverted wiring channel of nominal lamp length and havinga flat upper wall, external, longitudinally-extending outwardly-facingbeads along and just below the edges of the upper wall for the receptionof supporting clamps, inner, longitudinally-extending inwardly-facinggrooves inside and above the external beads, and side walls extendingvertically downward from the beads and grooves, the lower edges of theside walls having interiorly disposed stiffening ribs, interiorlydisposed fluorescent lamp socket carrying brackets secured to the upperwall of the wiring channel at a short distance from the end of thechannel and spaced below the end of the upper wall of the channel at theends thereof to be out of contact therewith, the brackets extendingdownwardly in the plane of the end of the channel, reflector supportingstuds carried by the upper wall of the channel,a trough shaped sheetmetal reflector of the same length as the channel, carried by the studsand held against 'the stiffening ribs, and an end plate secured to anend bracket and having an upper flange fitting in the grooves, sideflanges fitting the inner side walls of the channel and outer flangesfitting about the ends of the reflector below the wiring channel, theflanges serving to align the end plate and reflector end with respect toone another and the channel, a lamp socket secured to each bracket, anda socket carried lamp in the reflector.

2. A fixture such as claimed in claim 1 having a second length of likewiring channel carrying the like brackets, sockets, reflector supportingstuds, reflector and lamp, and wherein the ends of the channels andreflector ends abut, and having a channel connecting strap entering thegrooves in the channels and secured to the upper walls of the channels,and a baflle plate extending transversely of the reflectors at the jointwhere they meet, the baffle plate having flanges extending across thejoint and fitting the inner contour of the reflectors to hold themaligned, and means to hold the baffle plate in place.

SHIRLEY R. NAYSMITH.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,182,434 Hokl Dec. 5, 19392,265,021 Beals Dec. 2, 1941 2,291,490 Naysmith July 28, 1942 2,317,434Biller Apr. 27, 1943 2,321,099 Naysmith June 8, 1943 2,335,736 CampenNov. 30, 1943 2,337,685 Schepmoes Dec. 28, 1943 2,348,930 Schepmoes May16, 1944 2,368,810 Donnelly Feb. 6, 1945 2,463,013 Beals et a1 Mar. 1,1949 2,463,057 Runge Mar. 1, 1949

